Machine for the manufacture of capsules for bottles.



PATENTED FEB. 27, 1906.

E. WATZKE.

MACHINE FOR THE MANUFACTURE OF CAPSULES FOR BOTTLES.

APPLICATION FILED DBO, 24, 1902.-

3 SHEETS-SHEET 1.

PATENTED FEB. 27, 1906. E. WATZKB. .MAGHINE FORTHE MANUFACTURE OF CAPSULES FOR BOTTLES.

APPLICATION FILED DEOJ24. 1902.

3 SHEETS-SHEET 3.

1 marked thereon, which 30 spindle, thereby exercisin UhlifTE TENT. @FEIGF l in I EDUARD WATZKE, OF FRIEDBERG, AUSTRIA-HUNGARY, ASSIGNOR OF ONE-HALF TO IGNAZ NAGY, OF FRIEDBERG, AUSTRIA-HUNGARY.

MACHlNE FOP: MANUFACTURE 9F CAPQSULES FQR BOTTLES.

Specification of Letters Patent.

Patented Feb. 27, 1906.

1"!) (LU whom it ill/(13y (ion/Jerri:

Be it known that I, EDUARD 'VVATZKE, a sulnect 'of the Emperor of Austria-Hungary,

' residing at Friedberg, in the Province of Sty- 5 ria, in the Empire of Austria-I iungaryyhave invented certain new and use'fnl- 'lmprovements in Machines for the Manufacture of Capsules for Bottles and the Like; and I do 'herebydeclare the following to be-a full, clear,

' 1b and exact description of the invention, such as will enable others skilled in theart to which it appertains to makeand usethc same, reference being had to the accompanying drawings, and to characters of form a part-of this specification.

This invention relates to improvements in machines for manufacturing capsules for bottles from a disk that has been previously go stamped from a tin-foil strip into the form of a dish-shaped blank before it is fed to the ma- I chine, Where it is finally stretcied into the form ofthe finished capsule.

The invention consists in thespecial ar- 2 5 rangement of the stretchingldevices intended I to-Work the dished blank, t e arrangement of two or more stretching-rollers acting simultaneously on the blank to give the rollers a uniform parallel motion along the stretchingform action on the dishe entlre stroke of the spindle.

The invention may be fully understood by the following description and reference to the blank during the 5 accompanying drawings, in Which 4o dished blank and for transforming it into the finished capsule. Fig. 2 is a horizontal section on. the line A B, Fig. 1, a portion of the stretclnng-splndle being omitted. Fig. 2 1s an enlarged detail side view of the cam 58.

45 Fig. 3 IS a cross-section on the line C D, Fig.

2, in the direction of the arrow. Figs. 4 and 5 show in front and in rear elevation, re spectively, and on a larger scale the device which carries the pressure-rollers. Fig. 6

50 shows, on a larger scale, a portion of the device carryin the roller. Fig. 7 represents, also on a larger scale, the cam serving to shift lengthwise the device :a-rrying the rollers. Figs. 8

reference a steady and uni- I and 9 represent thestretching device in two positions corresponding to the beginning and to the end of the stretching. Fig. 10 shows the dished blank, and Fig. 11 the finished capsule in section.

The main shaft 5 is arranged in a standard 2,-fixed on the base-plate of the machine, and in a bearing 3 of the frame 4, mounted on the base-plate. This main shaft 5 is arranged to be thrown into and out of gear with the driving-pulley 8, loosely mounted on the main shaft, by means of a clutching device 7, perated by the hand-lever 6. The shaft drives, by means of the gear-wheels 9 9 and 10, respectively, two counter shafts 13 and 14, mounted beneath the main shaft in bearings 11 11 and 12 12, respectively.

The shaft 13 drives, by means of the bevel- Wheels 15, a transverse shaft 16, running in bearings 17 and on which there is secured a stepped cam 18, *hich during its rotation dis-- places axially a rod 21, guided in fixed bearings 19 and constantly pressed toward the periphery of the cam by means of a spring 20. This rod is prevented from rotating by means of a screw 22 in the bearing 19 engaging a longitudinal slot of the rod. The latter has at its free end a rotary spindle 24, provided with an india-rubber ring 23.

In line with the rod 21 is arranged the stretching mechanism, which consists of a horizontal spindle 27 mounted in fixed bearings 25 and--26 and having a fast pulley 28 and" a loose pulley 29 and capable of being driven at a high speed by means of a belt 30. At the right-hand end 31 of the spindle 27, which is corresponding to the hollow space of thefinished capsule a, Fig. 11, ofconical shape, there is arranged a sleeve 32, prevented from rotating by means of screw 34 engaging in the longitudinal slot in the spindle. This sleeve is reduced at its end situated. near to rod 21 in such a manner that it fits into the lever 39. These recess in the dished blank Z), Fig. 10. A spring 35 tends to push the sleeve 32 toward by means of studs 40, to a bearing-plate 41, throu h the central aperture 42of which the stretc ing-spindle 27, with its sleeve 32, can

pass.

The opposite free end of each lever 39 is provided with a pin 43, projecting through a curved slot 44 of the plate 41, having its center in the stud 40, and through an inclined or eccentric slot 45 of a circular disk 46, rotatably fixed to the plate. When this disk 46 is being rotated, the edges of the inclined slots 45 cause the displacement of the pins 43 in the corresponding curved slots 44, Figs. 4 to 6, and conse uently an" oscillation of the le vers 39, so tiat the pressure-rollers 36 are moved toward the stretching-spindle or from it, according to the direction in .which the disk is rotating. The two pressure-rollers may be disposed,

as represented, diametrically or at other angles against each other, or there may be arranged more than two pressure-rollers.

The bearing-plate 41 is secured to a slide 47 ,sliding in a guiding 48, parallel to the axis of the stretching-spindle. At the rear side of the bearing-plate 41 is provided a shoulder 49, against which one end of a s which are respectively a iral spring is abutting, the other end of w ich presses against a shoulder 51 of the disk 46. The 0 eration of this disk 46, intended to put tfie ressure-rollers into theirv o eratiye position, is effected by a lever 53, ig. 2, pivoted at 52. The free end of said lever contiguous to the stretching device acts on the shoulder 51 either direct or, as shown, by means of a sliding roll 54, thereby rotating the disk 46 against the pressure of the spring 50 in such a manner that the pressure-rollers are moved into their operative position toward the stretchingsp1ndle. During the stretching operation the pressure-rollers have to move a ong arectilinear path, which, however, correspondin to the conical shape of the capsule, is inclined toward the axis of the spindle. Consequently the pressure-rollers must be displaced outwardly during their lon itudinal movement. To this end the shon der 51 of the disk 46 is suitably inclined, Fig. 2, so that during the motion of the slide 47 or of the bearing-plate 41 (to the left) the remoter parts of the inclined shoulder successivel reach the sliding roll 54 of the lever 53, which does not alter its position during the stretching operation. Therefore in. roportion as the slide 47 is moving to the eft the spiral spring 50 is gradua ly pressing back the s oulder 51, and with the latter the disk 46, 7 thereby oscillating the levers 39 and moving the pressure-rollers outwardly in acorresponding manner. The lever 53 is articulated to a rod 55, guided in bearin -arms 12 and 25', ed to or made of one casting with the bearings 12 and 25. The

rod is under the 1pressure of a spring 56, l 57, mounted at one end tendingto press aro of the rod 55, againsta cam 58, fixed on the short counter-shaft 14-. The said cam 58 is stepped, as shown in Fig. 2*, the face between the points 1". and 1 being an arc of a circle from the axis r of the shaft 14, and between the points 1' and r the radius increases,wh1le between thepoints r and 1" the faceof the cam is concentric to the portion 1" T While the cam is turning from 1" to 1' the rod 55 remains stationary, and during the same perioj the blank I) isdriven on the sleeve 32 of the spindle 27 by the operation of the cam 18. During the movement of the cam from r to 1' the rod 55 is pushed forward and takes the position shown in Fig. 2 a short time before the beginning of the stretching operation and remains stationary durin the travel of the earn from the point r r, w 'ch is owing to the fact that the cam between these points is con centric to the axis ofthe' shaft 14, as above described. During this last period the slide 47 is traveling to the left, and the inclined shoulder 51 travels upon the roller 54 of the lever 53, causing the rol ers 36 to separate according to the conicity of the end 31 of the spindle 27.

When the roller 57 on therod 55 passes the point r on the cam, said rod- 55 is quickly returned to its former position under the action of the spring 56 after the stretching operationis accomplished. By this movement of b the lever 53. and the spring 50 rotates the disk 46 in such a manner as to move the pres sure-rollers 36 outwardly, as hereinbefore dc.-

'scribed, and to move the,sleeve 32 under the action of the spiral spring 35 toward t'he'end of the'stretching-spindle 27.

The to-and-fro motion of the slide 47 is preferably effected by means of a cam 60,-.

eyed upon theshort transverse shaft 59, Figs. 1 and 2, and'inclosed' in a yoke-shaped frame 61, the adjustable bearing-rod 63 of which is connected with the slide 47 at 64.

The shaft 59 of the cam is driven by the transverse shaft 16 by means of the gear-wheels 65 '1 to of equal diameters or in any other known manner. Accordin to the present invention the cam 60 is s aped so as to impart auniform movement to the slide 47, and therefore also to the pressure-rollers 36. For this pur ose the cam is so constructed that similar inc ina-' tions of its working surface correspond to similar angles. Fi 7 shows in what manner a curve of this kin may be generated.

The dishedblank b which is to be transformed into a capsule is fed to the stretching deviceby means of a feeding-hopper 66, attached to the forked head, 67 of a transverse rod 68, guided in the arms 69, fixed to the bearing 12 and operated by a cam 70, fixed to the shaft 14'. 'The cam 70 acts on the rod 68, either direct or as shown in the drawin s, by means of an abutting roll 71, fixed to t e rod: The spring 72 moves the rod, together I the rod 55 the inclined shoulder 51 is released I I siaeoa 'with its fork 6'7 back into their rear position. (See Fig.3.)

The operation of the machine is the followingz- As soon as the fork 67 is in its rear position, Fig. 3, the dished blank I) is introduced through the hopper 66 into the fork, in which it remains. Now the fork-piece is moved forward so far that it lies in the axis of the stretching-spindle 27, Fig. 2. Then the rotary spindle 24 is moved toward the stretching-spindle by the camlS, so that its ring 23 will push the blank lying in the fork onto the conical end of the sleeve 32, rotating at a high speed, Fig. 8. Immediately afterward the lever 53 is displaced by means of the cam 58, and thereby the pressure rollers 36 are moved toward the stretching spindle and brought into their operative position. In this moment the cam 60 causes the uniform displacement of the pressure-rollers 36 along the conical end 31 of the stretching-spindle,

whereby the blank is stretched to form the finished capsule, while at the same time the sleeve 32 is being pushed back. A short time after the commencement of the stretching operation the rod 21 reaches the step of the cam 18, so that the spindle 24 is moved back again by the spring and its ring 23 is raised from the top of the capsule. As soon as the stretching operation is finished the lever 53 releases the inclined projection 51, so that the spring 50 turns back the disk 46 and throws the pressure-rollers 36 quickly into their inoperative position. thus released and will be moved by the pressure of the spiral spring toward'the end 31 of the stretching-spindle,- thereby stripping off the-finished capsule from the conical end of the stretching-spindle. The ca sule falls through an aperture of the baseate 1 into a receptacle arranged beneath.

By the arrangement of several. pressurerollers acting simultaneously and moving uniformly an increased uniform action of the same during the whole operative stroke is obtained, because the degree of the stretching also remains the same at all places of the capsule.

If the "machine should be adjusted forthe manufacture of capsules of a different length, the ca1n60 is taken off and is replaced by'another cam of suitable dimensions, but of simi lar form, While the frame 61 is adjusted to correspond to this cam by means of setscrews 73. a

The heretoforedescribed action of the stretching device remains the same in every case.

I claim 1. In a machine for making cap'sules,-the

combination of a rotatable spindle having a capsule-forming end portion, a plurality of stretching-rolls, a non nevolublebearin plate theigfor, a -yoke,.a rod connecting said The sleeve 32 is yoke and plate and a cam revoluble: in said yoke, for the purpose specified.

2. In amachine for making capsules, the combination of a rotatable spindle having a capsule-forming end portion, a plurality of stretchingrolls, a non-revoluble bearingplate therefor, a yoke, an adjustable rod connecting said yoke and plate, and a cam revoluble in said yoke, for the purpose specified.

3. In a machine for making capsules, the combination with a conical-ended rotatable spindle, of a non-revoluble bearing-plate, a plurality of stretching-rolls mounted on the latter, means for advancing the bearing-plate the length of said conical end,.means for causing the rolls to move parallel to the end duringsaid advance, and meansto spread said rolls simultaneously with the return of the bearing-plate.

plate axially of the slots, a pressure-roll mounted in each lever, a pinon the levers projectin through said slots, a disk mounted on the p ate provided with slots engaging .said pins, and means for rotating the disk,

substantially as and for the purpose specified.

5. In a machine for making capsules, the combination with a rotatable spindle having a ca sule-forming end portion, a non-revoluble earing plate surrounding said spindle, a plurality of stretching-rolls pivotally mounted on said bearing-plate, means for advancing the latter the length of the forming portion, and means for automatically returning the same, of a disk rotatable on the bearingthe plate, mechanism connecting the rolls and disk, means for rotating the latter on the advance and on the return of the bearin -plate.

.6. In a machine for making capsu es, the

combination with a rotatable spindle having a ca sule-forming end portion, a non-revolu IIO ble caring-plate having a central aperture surrounding the spindle, a lurality of stretching-rolls pivoted on said p ate around the aperture, means for advancing said plate t e length of the forming portion, and means for automatically returning the same, of a disk rotatably-mounted on the plate, mechanism connecting the rolls and-dlsk, an abutment on the disk and on the late, a resilient connection between said a utments and means for. rotating the diskon the advancement of the plateffor the'purpose specified.

'7. In a machine for making capsules,. the

combination With a rotatablespindle having a capsule-forming end portion, a'bearingpla'te surrounding said spindle, stretchingreturning the same,

rolls pivotally mounted on said plate, means for advancing the latter the length of the forming portion, and means for automatically of a disk rotatably mounted on the late, mechanism connecting the rolls and dis lr, an abutment on the disk and on the plate, means for engaging the diskabutment upon the advance of the plate, and .a spring connecting said abutments adapted to exert pressure thereon during said advancement.

8. In a machinefor making capsules, the combination with a rotatable spindle having a capsule-forming end portion, a bearingplate surrounding said spindle, stretchingrolls pivotally mounted on said plate, means for advancing the latter the length of the forming portion, and means for automatically returning the same, of a disk rotatably mounted on the plate adapted to control the movement of said rolls, an abutment on the disk,

' means to hold said abutment in its normal position and mechanism for displacing the abutment simultaneously With the advancement of the plate, for the purpose specified.

9 In a machine for making ca sules, the

combination with a rotatable spin is, a bearin -plate surrounding saidspindle, stretchingro ls pivotally mounted on said plate, means for advancing and means for automatically returning the latter, of a disk rotatably mounted on the plateoperatively connected with said rolls, means to normally hold the rolls in an inoperative position, an abutment on the disk, a movable element, and mechanism to cause said element to displace the abutment simultaneously with. the advance of the plate, for the purpose specified.

10..In a machine'for making capsules, the combination with a rotatable spindle, a bearing-plat'e surrounding said spindle, stretch-- ing-rolls pivotally mounted on the plate and means for advancing the latter, of a disk rotatably mounted on the plate operatively connected with said rolls, an abutment on the disk, a lever, mechanism to move the latter into contact with said abutment on the advance of the plate, and mechanism for holdihg said ing the lever stationary during said advancement.

11. In a machine for making capsules, the combination with a rotatable spindle, abearing-plate movable parallel to the longitudinal axis of said spindle, stretching-rolls ivotallv mounted on the plate and surroundspindle, means for advancing the plate and means for automatically returning the same, of a disk rotatably mounted on the plate and operatively connected with said rolls, an abutment on the disk,a lever, mech' anism to cause the latter to displace said abutment simultaneously with the advancement of the plate, means for holding the lever' stationary during said advancement,

means to hold the abutment in contact with the lever, and mechanism for returning the lever and plate simultaneously to their-normal positions 12. In a machine for making capsules, the combination with a conical-ended rotatable spindle, a bearing-plate movable arallel to the longitudinal axis of said spind e, stretch ing-rolls pivotally mounted on the plate and surrounding said spindle, means for advancing the plate along the conical part ofthe spindle andlmeans for automatically returning the same, of a disk rotatably mounted on the plate and operatively connected with said rolls, Han abutment on the disk inclined toward said axis of the spindle, a lever, mechanism to cause the latter to displace the abutm'ent upon the advancement of the plate, means for holding said lever stationary during said advancement, and means i or holding the abutment against said lever during advancement.

13. Ina machine for making ca sules, the combination with a conical-ends rotatablespindle, a non-revoluble bearin plate movable parallel to the longitudinal axis of the spindle, a cam having a surface adapted to advance the plate the length of said conical end, a step in said cam to permit the sudden return of the plate, stretching-rolls pivotally' mounted on the plate and surrounding the spindle, of a disk rotatably mounted on the plate andoperatively connected with said rolls. an abutment on the plate, an abutment on the disk inclined toward said axis of the spindle, a spring connecting said abutments, a lever, a cam formed to move the latter into contact with the inclined abutment and to hold said lever stationary during the advancement of the plate and havin a step to permit the lever to return simu taneously With the return of the plate.

14. In a machine for making capsules, a stretching mechanism comprising a slotted bearing-plate, aslotted disk rotatably mounted thereon, levers pivoted to the plate, a pin on one arm of each lever projecting through the slots in the plate and disk, and a roller secured to the free end of each lever, for the purpose specified. v

15. In a machine for making capsules, a

stretching mechanism comprising a bearingplate rovided with eccentric slots, a disk rotatab y mounted on said plate provided with inclined slots crossing the aforesaid slots, le vers pivotally mounted on the plate, a pin on one arm of each "lever projecting through a slot n the plate and diskjand a roller secured to the free end of each lever;

16. In a machine for making capsules, a

stretching mechanism comprising a bearing plate having acentral aperture and a plurality of eccentric slots, a disk rotatably mounted on said plate having a central aper- 813,604. & ture registering with the afbresaid eperiure, In testimony that I claim the foregoing as and aplurality-of inclined slots grossing the my invention I have signed my name in pres- 1'0 aforesaid slots, levers pivotally rfiziunted on ease of two subscribing Witnesses. the plate a pin on one arm of eac ever ro- T jecting tl lrough a slot in the p1ate-"and in the EDUARD WATZKE' disk, a roller mounted on the free arm'of each Witnesses: lever, and a spring connecting thepla'te and JOSEFURUBASCH,

disk. Ammsro S. House. 

